Structure of PDB 1b8o Chain A Binding Site BS02

Receptor Information
>1b8o Chain A (length=280) Species: 9913 (Bos taurus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
NGYTYEDYQDTAKWLLSHTEQRPQVAVICGSGLGGLVNKLTQAQTFDYSE
IPNFPESTVPGHAGRLVFGILNGRACVMMQGRFHMYEGYPFWKVTFPVRV
FRLLGVETLVVTNAAGGLNPNFEVGDIMLIRDHINLPGFSGENPLRGPNE
ERFGVRFPAMSDAYDRDMRQKAHSTWKQMGEQRELQEGTYVMLGGPNFET
VAECRLLRNLGADAVGMSTVPEVIVARHCGLRVFGFSLITNKVIMDYESQ
GKANHEEVLEAGKQAAQKLEQFVSLLMASI
Ligand information
Ligand IDIMH
InChIInChI=1S/C11H14N4O4/c16-2-5-9(17)10(18)7(15-5)4-1-12-8-6(4)13-3-14-11(8)19/h1,3,5,7,9-10,12,15-18H,2H2,(H,13,14,19)/t5-,7+,9-,10+/m1/s1
InChIKeyIWKXDMQDITUYRK-KUBHLMPHSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 2.0.7c1c(c2c([nH]1)C(=O)NC=N2)C3C(C(C(N3)CO)O)O
CACTVS 3.385OC[C@H]1N[C@H]([C@H](O)[C@@H]1O)c2c[nH]c3C(=O)NC=Nc23
ACDLabs 12.01OC1C(NC(CO)C1O)c1c[NH]c2c1N=CNC2=O
OpenEye OEToolkits 2.0.7c1c(c2c([nH]1)C(=O)NC=N2)[C@H]3[C@@H]([C@@H]([C@H](N3)CO)O)O
CACTVS 3.385OC[CH]1N[CH]([CH](O)[CH]1O)c2c[nH]c3C(=O)NC=Nc23
FormulaC11 H14 N4 O4
Name1,4-DIDEOXY-4-AZA-1-(S)-(9-DEAZAHYPOXANTHIN-9-YL)-D-RIBITOL;
Forodesine;
Immucillin H
ChEMBLCHEMBL218291
DrugBankDB06185
ZINCZINC000013492899
PDB chain1b8o Chain A Residue 600 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB1b8o Transition state structure of purine nucleoside phosphorylase and principles of atomic motion in enzymatic catalysis.
Resolution1.5 Å
Binding residue
(original residue number in PDB)		H86 Y88 A116 G118 F200 E201 M219 N243 H257 V260
Binding residue
(residue number reindexed from 1)		H84 Y86 A114 G116 F198 E199 M217 N241 H255 V258
Annotation score1
Binding affinityMOAD: Ki=23pM
PDBbind-CN: -logKd/Ki=10.64,Ki=23pM
Enzymatic activity
Catalytic site (original residue number in PDB) S33 H64 H86 Y88 E89 A116 M219 S220 N243 V245 H257
Catalytic site (residue number reindexed from 1) S31 H62 H84 Y86 E87 A114 M217 S218 N241 V243 H255
Enzyme Commision number 2.4.2.1: purine-nucleoside phosphorylase.
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004731 purine-nucleoside phosphorylase activity
GO:0016757 glycosyltransferase activity
GO:0016763 pentosyltransferase activity
GO:0047975 guanosine phosphorylase activity
Biological Process
GO:0006139 nucleobase-containing compound metabolic process
GO:0006166 purine ribonucleoside salvage
GO:0009116 nucleoside metabolic process
Cellular Component
GO:0005737 cytoplasm

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1b8o, PDBe:1b8o, PDBj:1b8o
PDBsum1b8o
PubMed11170405
UniProtP55859|PNPH_BOVIN Purine nucleoside phosphorylase (Gene Name=PNP)

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